What Is an EMI and How Is It Calculated?

An Equated Monthly Instalment (EMI) is the fixed amount a borrower pays to a lender every month until the loan is fully repaid. Each payment covers both principal and interest, with the interest portion being higher in early months and the principal portion rising over time — this is called a reducing-balance schedule. EMI calculators are used for home loans, car loans, personal loans, and education loans.

EMI Formula

The standard EMI formula used by Indian banks (per RBI guidelines) is:

EMI = P × R × (1 + R)^N ÷ [(1 + R)^N − 1]

Where P is the loan principal, R is the monthly interest rate (annual rate ÷ 12 ÷ 100), and N is the loan tenure in months.

Worked Example

Suppose you take a home loan of ₹20,00,000 at an annual interest rate of 8.5% for 20 years (240 months).

Use the calculator above to adjust the loan amount, interest rate, and tenure to find the EMI that fits your monthly budget.